Eucharist, ū′ka-rist, n. the sacrament of the Lord's Supper: the elements of the sacrament, as 'to receive the Eucharist.'—adjs. Eucharist′ic, -al. [Gr. eucharistia, thanksgiving—eu, well, and charizesthai, to show favour—charis, grace, thanks.]
Euchlorine, ū-klō′rin, n. a very explosive green-coloured gas, prepared by the action of strong hydrochloric acid on chlorate of potash.—adj. Euchlō′ric. [Gr. eu, well, chloros, green.]
Euchologion, ū-ko-lō′ji-on, n. a formulary of prayers, primarily that of the Greek Church.—Also Euchol′ogy. [Gr. euchologion—euchē, a prayer, logia—legein, to speak.]
Euchre, ū′kėr, n. an American game at cards for two, three, or four persons, with the 32, 28, or 24 highest cards of the pack—if a player fails to make three tricks he is euchred, and his adversary scores against him.—v.t. to outwit. [Ety. uncertain; prob. Ger., like the term bower (q.v.), used in the game; some have suggested a Sp. yuca.]
Euclase, ū′klās, n. a silicate of aluminium and glucinum occurring in pale-green transparent crystals. [Fr.,—Gr. eu, well, klasis, breaking.]
Euclidean, ū-klid′e-an, or ū-kli-dē′an, adj. pertaining to Euclid, a mathematician of Alexandria about 300 B.C.
Eudemonism, Eudæmonism, ū-dē′mon-izm, n. the system of ethics that makes happiness the test of rectitude—whether Egoistic, as Hobbes, or Altruistic, as Mill.—ns. Eudē′monist, Eudæ′monist. [Gr. eudaimonia, happiness—eu, well, daimōn, a god.]
Eudiometer, ū-di-om′e-tėr, n. an instrument for measuring the purity of, or the quantity of oxygen contained in, the air.—adjs. Eudiomet′ric, -al.—n. Eudiom′etry. [Gr. eudios, clear, metron, measure.]
Euge, ū′jē, interj. well! well done! [L.]
Eugenic, ū-jen′ik, adj. pertaining to race culture.—n.pl. Eugen′ics, the science of such.—n. Eu′genism.